Module: Linebook::Os::Linux

Includes:
Utilities, Posix
Included in:
Ubuntu
Defined in:
lib/linebook/os/linux.rb,
lib/linebook/os/linux/utilities.rb

Overview

Defines Linux-compliant functionality, based on the Linux Standard Base Core Specification 4.1 . See the online documentation for:

Posix does not specify commands for user management, but Linux does. Now that users are overtly in the mix, see How to Switch Users for picking a su policy.

Defined Under Namespace

Modules: Utilities

Instance Method Summary collapse

Methods included from Utilities

#_group?, #_groupadd, #_groupdel, #_groupmod, #_groups, #_gzip, #_hostname, #_install, #_md5sum, #_mktemp, #_su, #_tar, #_user?, #_useradd, #_userdel, #_usermod, #group?, #groupadd, #groupdel, #groupmod, #groups, #gzip, #hostname, #install, #md5sum, #mktemp, #su, #tar, #user?, #useradd, #userdel, #usermod

Methods included from Posix

#_append, #_break_, #_check_status, #_check_status_function, #_comment, #_continue_, #_elif_, #_else_, #_execute, #_exit_, #_from, #_heredoc, #_if_, #_redirect, #_return_, #_section, #_to, #_unless_, #_until_, #_variable, #_while_, #append, #break_, #check_status, #check_status_function, #command_str, #comment, #continue_, #elif_, #else_, #execute, #exit_, #from, #function, #function?, #functions, #heredoc, #if_, #option?, #option_quote, #options_str, #program_name, #quote, #quoted?, #redirect, #return_, #section, #signature, #to, #trailer, #unless_, #until_, #var, #variable, #while_

Methods included from Posix::Utilities

#_basename, #_cat, #_cd, #_chgrp, #_chmod, #_chown, #_cmp, #_comm, #_cp, #_cut, #_date, #_directory?, #_dirname, #_echo, #_executable?, #_exists?, #_expand, #_export, #_file?, #_fold, #_grep, #_has_content?, #_head, #_id, #_link?, #_ln, #_ls, #_mkdir, #_mv, #_paste, #_pathchk, #_pwd, #_read, #_readable?, #_rm, #_rmdir, #_sed, #_set, #_sort, #_split, #_tail, #_touch, #_tr, #_tsort, #_uname, #_unexpand, #_uniq, #_unset, #_wc, #_writable?, #basename, #cat, #cd, #chgrp, #chmod, #chown, #cmp, #comm, #cp, #cut, #date, #directory?, #dirname, #echo, #executable?, #exists?, #expand, #export, #file?, #fold, #grep, #has_content?, #head, #id, #link?, #ln, #ls, #mkdir, #mv, #paste, #pathchk, #pwd, #read, #readable?, #rm, #rmdir, #sed, #set, #sort, #split, #tail, #touch, #tr, #tsort, #uname, #unexpand, #uniq, #unset, #wc, #writable?

Instance Method Details

#_login(*args, &block) ⇒ Object

:nodoc:



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# File 'lib/linebook/os/linux.rb', line 63

def (*args, &block) # :nodoc:
  str = capture_str { (*args, &block) }
  str.strip!
  str
end

#capture_script(options = {}) ⇒ Object 



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# File 'lib/linebook/os/linux.rb', line 30

def capture_script(options={})
  unless options.kind_of?(Hash)
    options = {:target_name => guess_target_name(options)}
  end

  target_name = options[:target_name] || guess_target_name('script')
  path = capture_path(target_name, options[:mode] || 0770) { yield }

  owner, group = options[:owner], options[:group]
  if owner || group
    callback 'before' do
      chown owner, group, path
    end
  end

  path
end

#guess_target_name(source_name) ⇒ Object 



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# File 'lib/linebook/os/linux.rb', line 23

def guess_target_name(source_name)
  target_dir  = File.dirname(target_name)
  name = File.basename(source_name)
  
  _package_.next_target_name(target_dir == '.' ? name : File.join(target_dir, name))
end

#login(user = 'root', options = {}) ⇒ Object

Logs in as the specified user for the duration of a block (the current ENV and pwd are reset as during a normal login).



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# File 'lib/linebook/os/linux.rb', line 50

def (user='root', options={})
  current = functions
  begin
    @functions = nil
    
    path = capture_script(options) { yield }
    execute 'su', user, path, :l => true
  ensure
    @functions = current
  end
  chain_proxy
end